A few pointers.

That small o-ring is for the drain space between the two seals. The seals
need to be positioned so that any oil goes past a lip drains out.

Replace the seal on the governor shaft. ATF getting into the differential is
usually caused by this seal.

Check the ring and pinion shafts/bearing for proper adjustment. The pinion
shaft position and bearing preload is set with shims. The ring gear carrier
is set by the adjusting rings.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Peter T. Owsianowski
Sent: Saturday, February 20, 2010 6:38 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Bus work in the barn and Tiny O Ring on Differential

Hey Volks:  Check out my pics of some trans/diff work up in the barn today :
http://picasaweb.google.com/pnoceanwesty/JoesVanTrannyWork#

Wondering what the little O ring is called located on the differential -
under the cover plate that goes around the pinion. The Bentley makes no
mention of it in the 2.1 Automatic section on 29.50 and 39.51.

 When ordering parts, I asked a lot of questions and thought I had all the
seals/gaskets in the kits and individual orders but this little guy is not
around. Kind of stopped us in our tracks as I don't want to use a 21 year
old O ring over again. Do I have to get that at the dealer?

Either way, was a fun bus day in the barn. More work to come.

Anyway
Pete
'79 Westy "Aardvark"
'87 Westy "JoesVan"
WWW.Busesbythebeach.com